The .NET Email Validation Library by Kellerman Software is the cutting edge of email validation. We spent months analyzing fake email addresses. The fake email pattern checker eliminates numerous bad emails that actually return as valid email addresses with our competitors. It detects mail servers that implement grey listing so the email addresses can be verified later. It detects servers that are blocking your mail server. It detects disposable email addresses such as mailinator.com. It detects free email addresses. Sick of curse words in your mailing list? Eliminate them. The .NET Email Validation library doesn't have levels; it has options. Choose whatever options suit your project. Yes it performs industry standard syntax checking, mxRecord (Mail Exchange Record) lookups, and mailbox verification using multiple threads asynchronously.It supports all .NET project types including ASP.NET MVC, WPF, Webforms, Winforms, WCF, Windows Services, and Web Services. It can be used with any .NET language including VB.NET and C#. Download the full list of features.